2123130203111 has 4 divisors (see below), whose sum is σ = 2123262989424. Its totient is φ = 2122997416800.

The previous prime is 2123130203083. The next prime is 2123130203143. The reversal of 2123130203111 is 1113020313212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2123130203111 - 2¹⁰ = 2123130202087 is a prime.

It is a super-2 number, since 2×2123130203111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123130223111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66369170 + ... + 66401151.

It is an arithmetic number, because the mean of its divisors is an integer number (530815747356).

Almost surely, 2^{2123130203111} is an apocalyptic number.

2123130203111 is a deficient number, since it is larger than the sum of its proper divisors (132786313).

2123130203111 is a wasteful number, since it uses less digits than its factorization.

2123130203111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132786312.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2123130203111 its reverse (1113020313212), we get a palindrome (3236150516323).

It can be divided in two parts, 21 and 23130203111, that added together give a palindrome (23130203132).

The spelling of 2123130203111 in words is "two trillion, one hundred twenty-three billion, one hundred thirty million, two hundred three thousand, one hundred eleven".